baber/WOPTO huggingface dataset:
Patent GB-956971-A (GB)
Title: Travelling wave tube
Inventor: SCHMIDT ELWOOD RAE
IPC: H01J23/48
Filed: 1960-07-15
Abstract: 956,971. Travelling wave tubes; particle accelerators. SPERRY RAND CORPORATION. July 15, 1960, No. 24741/60. Heading H1D. A travelling wave tube or particle accelerator comprises means for producing and directing an electron stream along a predetermined axis, a periodically loaded slow wave propagating structure position along the axis for guiding electromagnetic energy for interaction with the electron stream, and means for transmitting electromagnetic energy to or from the propagating structure including a ridged waveguide extending along the axis coupled in end to end relation with the propagating structure and having an aperture allowing passage therethrough of the electron stream. Preferably the coupling is the seam at both ends of the discharge tube and contains a #/ 2  section of ridged waveguide. A coaxial line feeder 45, Fig. 1, has an inner conductor 41 supported by ceramic sealing bead 43 and having resilient fingers 53 #/ 4 long which engage a post 63 halfway along the ridge wave guide an aperture 58 in the ridge allowing passage of the electron beam. The delay line is a stack of discs, Fig. 4, soldered together and to the ridge waveguides. The delay line consists of spacers S, windows W and apertured (for beam passage) #/ 4  posts P, adjacent posts projecting from opposite sides of the structure. The device is designed for spatial harmonic operation, preferably on the first spatial harmonic and has loss at an intermediate region to prevent self-oscillation. If the posts have a different cross-section from the ridge 57 the ridge is tapered from 63 to the shape of the posts at the junction with the slow wave structure, or is formed as a multiple step transformer. The convergent gun is magnetically shielded and has a polepiece 19, a further polepiece 22 being provided at the collector end and the polepieces being energized by an electromagnet or permanent magnet.
Patent GB-593191-A (GB)
Title: Improved means applicable to internal combustion engines to facilitate inspection and repair
IPC: B25B11/00
Filed: 1944-12-11
Abstract: 593,191. Lifting-jacks. DAVEY, PAXMAN, & CO., Ltd., and PAXMAN, E. P. Dec. 11, 1944, No. 24789. [Class 78(iii).] .[Also in Group XXVII] Means applicable to an internal-combustion engine for enabling the crank shaft to be lowered and restored to operative position, comprise a jack or jacks to remove the lower halves of the intermediate bearings, and an adjustable cradle by which the crank is supported while the end bearings are removed, the cradle then being operable to lower the shaft to an accessible position. Fig. 1 shows a crank case 1 for an internalcombustion engine of the character described in Specification 560,287, [Group XXVII]. The crank case is mounted on a bed 2 provided with doors 3 in its sides, A central channelshaped guide 4 extends the length of the bed and is positioned vertically beneath the crankshaft. To lower the crank-shaft from the normal position shown on the left of the Figure to the inspection position shown on the right the intermediate bearing caps 11 are first removed, this being effected by a screw jack 14, Fig. 2, which is located on the guide 4 under the cap by a pin 18 passing through holes 17 in the guide and holes 16 in the jack base. The jack is of conventional type, adapted for the purpose by having a flange 8 at its upper end through which bolts 9 may be passed to be screwed into holes in the cap 11. After the bearing nuts have been loosened, the cap is lowered by operation of the screw jack. When all the intermediate caps have been removed the crank-shaft is supported by a cradle 25, during the removal of the end-bearing caps. The cradle has upwardly projecting crutches 27 and is lowered and raised by a telescopic jack 24 on the guide 4.
Patent GB-317486-A (GB)
Title: Means for regulating the back-pressure and the extraction pressure of extraction-type turbines
IPC: F01K7/34
Filed: 1929-08-14
Abstract: 317,486. Svenska Turbinfabriks Aktiebolaget Ljungstrom. Aug. 18, 1928, [Convention date]. Regulating.-In an extraction type of backpressure turbine plant, means are provided for regulating the fluid supply operated (a) by the back-pressure, (b) by the extraction chamber pressure, and, optionally, (c) by the backpressure conduit to the apparatus operated by the spent fluid. The invention is illustrated as applied to a multistage oppositely rotating rotor turbine. The steam enters the high-pressure stage 3 through a pipe 2 and passes through a duct 8 into the extraction chamber 10 fitted with an extraction pipe 11. The fluid passes from the extraction chamber 10 to the low-pressure stage 6 of the turbine through a slide valve 13 of the type described in Specification 240,152 and duct 12. The middle stage 7 is supplied directly from the high-pressure stage. When the pressure in the back-pressure conduit 27 falls, the diaphragm 24 of the valve 25 is pushed in by the spring 28 to lift the rod 23 to close the overflow pipe 22 of the oil supply of the servo-motor 17. This increases the pressure therein and tilts the rod 15 to open the valve 13 to admit more fluid. If the back-pressure rises too high, the opposite effect takes place. The pressure in the extraction chamber 10 operates via a pipe 36 to open or close the valve 30 of the inlet pipe 2 in the same way. If the fluid consumption in the backpressure conduit is so small that the backpressure becomes too high with the inlet valve 13 completely closed, a third regulating valve 40 is required. This valve is operated through the pipe 43, valve 44, and servo-motor 41 to shut off or admit fluid at 40 to the back-pressure pipe.
Patent GB-676069-A (GB)
Title: Apparatus for the electric butt welding of studs or the like to curved or plane surfaces
IPC: B23K11/00
Filed: 1950-10-11
Abstract: 676,069. Welding by pressure; shearing. ALLMANNA SVENSKA ELEKTRISKA AKTIEBOLAGET. Oct. 11, 1950 [Oct. 18, 1949], No. 24835/50. Class 83 (iv). Apparatus for the electric butt welding of metal studs formed from wire material comprises means for moving the wire through a straightening means and cutting a stud therefrom and pressure fluid actuated welding tongs for supplying welding current and applying welding pressure to the cutoff stud. In an embodiment, a unit includes welding tongs 4 comprising an arm 7 adjustably secured, to allow different stud lengths, to a hollow piston rod 9 and pivotally carrying at 20 an upper arm 8 to which is pivoted a cylinder 21 whose rod 22 is pivoted to the arm 7. Cutting means 1 comprise arms 3 pivoted to the rod 9 at 16 and to cylinders 17 supported on rods 18 which are pivoted at 19 to the rod 9. The rod 9 enters a cylinder 10 adjustably secured to a frame 11 carrying also a straightening device 14. Wire 13 from a reel passes through the device 14, the piston 9, edges 2 of the means 1 and jaws 5, 6 on the tongs 4. In operation fluid pressure is applied in the cylinder 10 to move the tongs 4 and the means 1 from the position of welding shown, with fluid pressure applied in cylinders 17, 21 to open jaws 5, 6 and edges 2. The means 1 and tongs 4 slide on wire 13 a distance equal to a stud length. Low pressure is applied in cylinders 17, 21 to effect gripping of the wire 13 by the edge 2 and jaws 5, 6 and fluid pressure in the cylinder 10 moves the whole to the left until the wire 13 contacts the work 15 when higher pressure is applied in cylinders 17, 21 to effect cutting of the wire 13 by the edges 2. Current is then supplied to the work 15 by a contact 31 pivoted to the arm 8 from a transformer 24 and to the stud 13 by the arm 8 to permit welding. A single arm 7 is employed for welding studs to flat surfaces and a double arm 7 for welding to curved surfaces. A device to control fluid pressure, welding current, timing of operation &c. is provided. In lieu of supplying different pressures to the cylinders 17, 21 for seizing and cutting respectively, a mechanical device is described which with full pressure in the cylinders permits the cylinder 17 only limited movement transverse to the rod 9 for a predetermined distance, thus limiting the pressure exerted by the edges 2. The restriction is removed to allow cutting. The cutting operation may take place before the wire 13 engages the work 15 so that relative movement of the stud 13<SP>1</SP> and cut wire 13 results. The edges 2 provide an abutment for the stud 13<SP>1</SP> during welding. A plurality of units may be employed, mounted on a common curved or straight support.
Patent GB-954923-A (GB)
Title: Improvements in electrical control device
IPC: H01H35/26
Filed: 1961-07-10
Abstract: 954,923. Thermal switches. ROBERTSHAW-FULTON CONTROLS CO. July 10, 1961 [Aug. 23, 1960], No. 24922/61. Heading H2B. An electrical control device comprises a thermally responsive bellows arrangement 20 which actuates a pivoted lever 18 against an adjustable spring-biasing assembly 14, an L- shaped lever 22 attached to lever 18 causing actuation of a snap-switch mechanism 26 which includes an arm 174 adapted to impart a wiping action force to the contact carrying switch blade 150, and an adjustable member 30 being movable to adjust the movement necessary of snap lever 190 to snap over-centre and actuate the switch contacts. Arm 174 is pivotally mounted at 184 and has extension arms engaging the rigid blade 150 such that counterclockwise motion of arm 174 in response to expansion of the bellows causes the extension arms to move blade 150 downwardly, against the resilience of its resilient portion 160, to impart the wiping action to the switch contacts as the switch blade snaps over. A control knob 60 sets the operating temperature of the device by adjusting the spring-biasing assembly 14. Counterclockwise rotation of the knob rotates a cam 50 to engage a lug 76 protruding from a vertically slidable plate 12 carrying the spring assembly, plate 12 being moved downwardly against a spring 98 to the required position. Continued downward movement causes plate 12 to engage lever 18 and actuate the switch. When used as a refrigerating control device the charge used in the bellows assembly 20 is a charge which contracts with a decrease in temperature, and only one circuit, including the right-hand contact 152, is necessary unless the second circuit, including the left-hand contact 152, is used for signal or defrosting purposes.
Patent GB-739128-A (GB)
Title: 2-alkoxy-3:4-dihydro-1:2-pyran derivatives, and process for their preparation
IPC: C07D309/30
Filed: 1954-09-09
Abstract: The invention comprises 2-alkoxy-3 : 4-dihydro-1 : 2-pyrans of the general formula <FORM:0739128/IV (b)/1> and their preparation by heating an unsaturated ether of formula RO.CH : CR1R2 with an unsaturated aldehyde R3CH : CR4.CHO under pressure, preferably in an autoclave between 150 DEG  and 300 DEG  C.  In the above formul  R and R1 are alkyl groups each having from 1 to 12 carbon atoms, R2 is hydrogen or an alkyl group having not more than 12 carbon atoms, and R3 and R4 are hydrogen or alkyl groups having up to 5 carbon atoms. Specified unsaturated ethers are 1-propen-1-ol, 1-buten-1-ol, 2 - methyl - 1 - propen - 1 - ol, 2 - ethyl - 1-buten - 1 - ol, 1 - hexen - 1 - ol, and 2 - ethyl-1-hexen-1-ol; and unsaturated aldehydes mentioned include acrolein, methacrolein, crotonaldehyde, 2-ethyl-2-hexenal, 2-propyl-2-hexenal, 2-ethyl-2-butenal, 2-methyl-2-pentenal, 2-hexenal, 4-ethyl-2-hexenal and 2-butyl-2-octenal.  A polymerization inhibitor, e.g. pyrogallol, t-butyl catechol, and hydroquinone may be added to the reaction mixture, particularly when acrolein or methacrolein is a reactant. In examples: (1) acrolein, 1-butenyl methyl ether and hydroquinone are autoclaved and the product fractionated to yield 2-methoxy - 3 - ethyl - 3 : 4 - dihydro - 1 : 2-pyran; (2) 2-ethyl-2-hexenal, 1-propenyl methyl ether and hydroquinone similarly yield 2 - methoxy - 3 - methyl - 4 - propyl - 5 - ethyl-3 : 4 - dihydro - 1 : 2 - pyran; (3) as in (1) but using 1-propenyl methyl ether, to give 2-methoxy - 3 - methyl - 3 : 4 - dihydro - 1 : 2-pyran; (4) as in (1), using crotonaldehyde to give 2 - methoxy - 3 - ethyl - 4 - methyl - 3 : 4-dihydro-1 : 2-pyran.  Reference is also made to the formation of 2-methoxy-3 : 4-dimethyl-5 - ethyl - 3 : 4 - dihydro - 1 : 2 - pyran from 2 - ethyl - 2 - butenal and 1 - propenyl methyl ether, and 2-methoxy-3 : 3 : 4-trimethyl-3 : 4-dihydro - 1 : 2 - pyran from crotonaldehyde and 2-methyl-1-propenyl methyl ether. Hydrolysis of the methoxytrimethyldihydropyran yields 2 : 2 : 3-trimethylglutaraldehyde.  2-Methyl-1-propenyl methyl ether is prepared by decomposition of the dimethyl acetal of isobutyraldehyde.
Patent GB-683811-A (GB)
Title: Improvements in or relating to magnesium base alloys
Inventor: JESSUP ALFRED CLAUDE
IPC: C22C23/00
Filed: 1949-09-29
Abstract: An alloy solution treated above 550 DEG C has the following composition: Mg at least 80 per cent, Li from 0.2 per cent to less than 5.7 per cent, one or more rare earth metals 0.5-15.0 per cent; the alloy may also contain one or more of the following elements: Zn up to 12.0 per cent, Cd up to 19.3 per cent, Th up to 10.0 per cent, Hg up to 10.0 per cent, Ag up to 10.0 per cent, Ba up to 2.0 per cent, Sr up to 2.0 per cent, Ca up to 2.0 per cent, Pb up to 2.0 per cent, Be up to 0.1 per cent Al up to 12.0 per cent, Mn up to 10.0 per cent, In up to 10.0 per cent, Tl up to 10.0 per cent, Na less than 0.1 per cent.  Specifications 17805/46, (as open to inspection under Sect. 91), and 637,040 are referred to.
Patent GB-1431988-A (GB)
Title: Lifting mechanism
IPC: B66F11/04
Filed: 1973-05-25
Abstract: 1431988 Platform elevators J TRANCHERO 25 May 1973 25088/73 Heading B8H A platform elevator comprises a wheeled base with a pair of upstanding supports 5 to which pairs of levers 8, 15 are pivotally mounted to pivotally support a lever 18 acted upon by an hydraulic actuator 7 pivotally mounted to the base. A further lever 20 is pivotally connected at 19 to the lever 18 and is also pivotally connected to a tie-bar 22 coupled to the lever 16. A further lever 28 is pivotally connected at 29 to the lever 20 and is also pivotally connected to a tie rod 25 coupled to the lever 18. A bell crank 31 is pivotally connected to the lever 28 and to a tie-bar 32, connected to the lever 20, and forms with two pairs of levers 37, 38, pivotally connected thereto, and a further bell crank 41 a first parallelogram pivotable by an hydraulic actuator 50. A further two pairs of levers 44, 45 are connected to the bell crank 41 and together therewith and with a bracket 48 form a second parallelogram pivotally movable by an hydraulic actuator 54. A platform or cage is mounted on the bracket and remains substantially horizontal during the lifting and lowering thereof. In a modification of the elevator (Fig. 4) not shown the bell crank 31 is connected directly to the lever 18 and the tiebar 22.
Patent GB-1604498-A (GB)
Title: Time counter
IPC: G07C3/04
Filed: 1978-05-31
Abstract: The time meter has a housing (1) which contains a plug socket (3) on one side and a plug (4) on the opposite side. The time meter can consequently be inserted into any conventional mains plug socket and also allows the simple connection of the consumer to be controlled. Mounted preferably along one edge of the housing (1) is a timer in the form of a counter (5) which indicates the operating time. It is switched on, as required, via a switch (6) which can be designed as a ring, the connected consumer also being switched on at the same time.   This time meter also makes it possible to measure consumers, in which it is not possible to install their own meter, the connection of the consumer to the time meter presupposing no specialised knowledge. <IMAGE>
Patent GB-625985-A (GB)
Title: Improvements in the manufacture of discs, wheels and like articles from metals that are difficult to forge
IPC: B22D13/04
Filed: 1946-08-22
Abstract: 625,985. Centrifugal casting-machines; altering physical structure. SYKES, C., THORNTON, A. E., and STOKES, C. Aug. 22, 1946, No. 25105. [Classes 83 (i), 83 (ii) and 83 (iv)] Making turbine and rotor discs, wheels, dies, &c.-Disc-like articles are made from alloys which are difficult to forge, i.e. those which may contain varying percentages of iron, nickel, chromium, columbium, titanium, tungsten, cobalt, molybdenum or copper, by first centrifugally casting the metal into the shape of a disc and then subjecting it to hot working to improve its grain structure and mechanical properties. The casting may be machined before and after the forging treatment which results in a change of linear dimension usually from about 10 per cent to 30 per cent. The casting is carried out centrifugally in a two-part die 4, 5, within a cylindrical outer container 2 mounted on a rotary plate 3. A refractory feeder head 9, of double frusto-conical shape, and the metal die 4, 5, are preheated to a temperature of approximately 300‹ C. and the casting of the metal is carried out at the lowest practicable temperature, usually from 50‹ to 60‹ C. above the solidification point of the metal being cast. Specifications 433,534, 589,385 and 626,041 are referred to.
Patent GB-224876-A (GB)
Title: Improvements relating to the manufacture of seamless insulating tape
IPC: H01B13/08
Filed: 1924-10-22
Abstract: 224,876. Schweizerische Isola-Werke. Nov. 13, 1923, [Convention date]. Cutting tubular fabrics to form flat fabrics.- Jointless diagonal insulating-tape is made by drawing a length of insulating material in the form of a tube over a rotatable mandrel, and cutting it in a direction inclined to the axis of rotation, the cut material being withdrawn while the mandrel is rotating, whereby a continuous band is obtained having the warp and weft threads inclined to the longitudinal direction of the tape. In the apparatus shown in Fig. 1, the tubular material b is withdrawn from a roller c mounted in a frame d rotatable about an axis d' co-axial with a cylindrical mandrel a. The mandrel has an annular cutting-edge f co-operating with a disc g, driven rollers h being provided for winding the tape and drawing the material b over the mandrel. Feeding-devices may be provided for conveying the tape to the rollers h. In a modification, the mandrel is in the form of a flat plate having cutting-edges arranged on each side adapted to co-operate with a cutting knife which is depressed to cut the tubular material after each half revolution of the mandrel.
Patent GB-1377144-A (GB)
Title: Image signal converter in facsimile
IPC: H04N5/91
Filed: 1972-05-30
Abstract: 1377144 Television MATSUSHITA ELECTRIC INDUSTRIAL CO Ltd 30 May 1972 [28 May 1971] 25215/72 Heading H4F A received signal is converted into a broadcast video signal which will reproduce a correct image even if the received signal would produce an inverted image. The received signal is described as a signal from a weather satellite carrying a photo-detector, the spin of the satellite producing line scans. When the satellite passes over an object from south to north, the received image will be north-south and east-west inverted relative to the image received from the satellite passing from north to south over the same object after the earth has rotated 180 degrees relative to the satellite's path. The received signal is passed to a circuit which is a modification of the known circuit of Fig. 2, the successive line scans being memorized at 15 and subsequently readout during the line flyback period and recorded on a magnetic disc 22 and then passed to a video signal converter 24, disc 22 carrying information related to one field of the output signal from 24. The circuit of Fig. 2 is modified by the replacement of memory circuit 15 and address indicator 19, circuit 15 being replaced by the circuit of Fig. 6. Timing controller 30 produces a start signal in response to read-in or read-out pulses and coincidence with the output of a counter 35 causes an output from memory driver 33. For read-in operation counter 35 counts pulses from a generator 37 in addition mode if the received signal would produce a correct picture or in subtraction mode if the received signal would produce an inverted picture to cause east-west re-inversion. The output from the memory driver 33 causes digital memory 41 to memorize the appropriate line fed to it by digit driver 46 from a register 45 receiving the input digital signal. For read ou toperation counter 35 always operates in the addition mode and the output of memory driver 33 causes the contents of memory 41 to be read-out to register 45 and hence via circuit 43 to the digital-analogue converter 20 of Fig. 2. The modified address indicator 19 (Fig- 7, not shown) operates so that the signals received from memory circuit 15 are recorded on magnetic disc 22 in different positions if an inverted image is being received, to cause northsouth re-inversion on read-out, than if a non- inverted image is being received.
Patent GB-380586-A (GB)
Title: Improvements in or relating to cigarette boxes
IPC: B65D85/10
Filed: 1931-09-09
Abstract: 380,586. Boxes for cigarettes &c. GORMAN, S., Glen Arthur, Duddingston, Edinburgh. Sept. 9, 1931, No. 25277. [Class 18.] In a box for cigarettes &c. comprising a shallow rectangular container 1 closed by a hinged lid 3 having a strip of matches secured on the inside 2 thereof, the matches 4 are covered by a flap or apron 5 secured to the lid at or near the connected ends of the matches. The flap is preferably of rice paper or other thin light material and is secured under the match-strip to fold over the matches.
Patent GB-421044-A (GB)
Title: An improved machine for washing sheep-skins
IPC: D01B3/08
Filed: 1934-09-03
Abstract: <PICT:0421044/IV/1> A machine for washing sheep - skins comprises upper and lower co-operating sets of spaced parallel endless belts between which the skins are received, and a plurality of washing tanks through which the belts travel.  At intervals, squeezing rollers and spraying pipes are provided.  The lower set of belts may be 4\ba1/2\be inches wide and pass over an end roller 9, guide roller 12, a roller 18 immersed in the first tank 4, between squeezing rollers 19, under a spraying pipe 25, over a partition 7, between squeezing rollers 20, 21, under a guide roller 22 immersed in a second tank 5, past a spraying pipe 25<a>, and between squeezing rollers 23, 24 and underneath the tanks over guide rollers 45.  The skins are placed in these belts between the rollers 9, 12.  The upper set of belts may be 1\ba1/2\be inches wide and are positioned above the lower belts.  They pass over end pulleys 15, 26 and engage the upper sides of the skins from the pulley 12 to the squeezing roller 23.  The rollers 18, 22 are grooved to guide the upper belts.
Patent GB-927905-A (GB)
Title: Magnetic memory device
Inventor: WANLASS CRAVENS LAMAR
IPC: H01F3/08
Filed: 1959-07-24
Abstract: 927,905. Magnetic storage devices. FORD MOTOR CO. July 24, 1959, No. 25450/59. Class 38 (2). [Also in Group XXXIX] A magnetic memory element for non- destructive read-out comprises a block 80 of magnetic material having orthogonal non- intersecting openings 81, 82, write-in being by a single conductor or by coincident pulse conductors 83, 84 to produce a state of magnetization which is temporarily disturbed by pulsing a single-sense conductor or coincident sense conductors 86, 87 to produce an output in read conductor 85. Write-in may be by switching pulses which are positive or negative according to the information to be recorded or the pulses of one polarity may be replaced by a decaying alternating current. Blocks of magnetic material having a number of sets of holes formed therein may be used or they may be formed by placing green unfired ferrite around the sets of conductors and curing it as described in Specification 927,906.